Combined excavator and loader



July 23, 1929. R U H| 1,721,587

COMBINED EXCAVATOR AND LoADER Filed July 9, 1928 4 Sheets-Sheet l Inventor flttorng.

' July 23, 1929. R I 1,721,587

COMBINED EXGAVATOR AND LOADER Filed July 9, 1928 4 Sheets-Sheet 3 4 3 Mid/201% y 23, 1929- R. BURCHILL 1,721,587

COMBINED EXCAVATOR AND LOADER Filed July 9, 1928 4 Sheets-Sheet 4 Patented Jul 23, 1929.

, UNITED STATES PATENT-OFFICE.

BOY BUBCHILL OF MITCHELL, ONTARIO, CANADA.

cous'msn nxcava'roa m) LOADEB.

Application Med m a, 1928.. Serial no. scram.

position worm surface soil to their meeting 1 point, where it is taken by a bucket wheel and fed to an'inclined'conveyor. The elevated soil is then received by a discharge.

conveyor which drops it into a wagon or truck for subsequent transportation.

Referring to the drawings, Figure 1 isa side elevation of the excavator and. loader depicting a portion ofthe inclined conveyor in sectionto display the screw therein. I

. Figure 2 is a front view thereof showing more particularly the fore-carriage and the running gear.

Figure 3 is a similar view to Figure 2, omitting the fore-carriage and showing the running gear partly in section. This view exhibits the spiral screws, bucket and the major part of the inclined conveyor.

. Figure 4 is a plan view chiefly in section,

of the drivin gear for taking ofi' power from the traction wheels. 7

Figure 5 depicts a part of one of the spiral screws and a vertical section of the driving gear therefor. Figure dis a plan view of the gear, spiral screws-and bucket;

Figure 7 is a side 'elevation, mostly in section, of the top of theinclined conveyor and the associated portion of the .discharge conveyor, illustrating the swivel connection therebetween.

Figure 8 is a side view of the bucket wheel. Figure 9 is a front view thereof. r

Figure 10 is a section taken on the line 1010 of Figure 9 showing the shape of the buckets.

Like numerals of reference indicate correspondin-g arts in each of the figures throu hout t e drawings.

running In t e drawings, the reference numeral 15 denotes the traction wheels which are of substantial diameter and have driving con- "nection with .the live axle 16 extending through them; the wheels and axle form a .part of the running gear or. power take-off.v

The axle is mounted in a housing- 17 by means of suitable bearings. Spaced at the rear ofthe axle 16 is a shaft 18 extending parallel therewith and rotatably supported in a housing 19 that is'secured to the'axle housing 17 as at 20. Both of the housings are enlarged as at 21 to one side of their longitudinal centres to provide a gear case.

22. The case contains a pair of meshing gears 23 and -24 for driving the shaft 18. at a greater speed than the axle 16;

The gear 23 is notdirectly: connected to clutch 25 that is manually controlled by the lever 26. Fastened to the gear 23 is 'a bevel gear 27 that'meshes with a pinion 128 from which the shaft 29 rearwardly inclines in order to take off power for o erating the into the axle 16 but operates through an ordinary clined conveyor as hereina ter more fully supported by the bracket 30 or otherwise.

The forecarriage 31-has the usual drawbar connection. 32 at its swivel and iscon- -nected to the running gear aforesaid by members 33. I v

Risingfrom the forecarriage is a station wheel being screwed up or down on the screw the bracket will be carried with it. Tie-rods 37 serve to connect the bracket to the ends of the axle housing 17 while uprights 38 rigidly secure it to the top end of the in clined conveyor tube 39. f The lower'ends of these uprights are rearwardlyprolonged as,

at 40 to attach to the lower end of the condescribed. This inclined shaft 29 may, be i veyor tube. By thisconstruction, as the handwheel is turned in a direction to lower hangers 43 for supporting the divergent 7 front ends of the spiral screws.

by means of meshing bevel gears 45. The lower end of each stub shaft is connected A vertical stub shaft 4k is journalled in each hanger and connected to the shaft 18 to the corresponding spiral screw by incased -meshing gears 460i a similar type, as best seen. in Figure 5.- Each hanger carries an inwardly inclined scraper 43'.

The rear of the 'frame 42 embraces the lower end of the tube 39, of the inclined .conveyor and carries the rear ends of,'the

spiral screws 41. These screws when in a working position partly enter the ground so that upon being turned they will .worm.

soil rearwardly to their meeting point or vertex, the soll being accumulated between the screws.

' The inclined conveyor comprises in addition to the tube 39 .a conveyor screw 47 which extends from end to endthereof, its

- integral shaft 48 protruding from opposite ends of the tube- The protruding top conveyor screw 47 so as to rotate it simultaneously with the spiral screws ll.

The lower end of the conveyor screw shaft 48. is supported by'the bearing 53 integral with the arched bracket 54. The bucket wheel55 is loosely mounted on this shaft so as to turn independently thereof. It is,

' however, driven by the shaft indirectly through reduction gearing 56 preferably but not essentially ofthe bevel gear typeillustrated in Figure 1. a

The bucket wheel consists of an angle rim 57 the lower part of which has line contact with the ground. The riin is integral with 'or secured to a back 58.and within the rim is a number of buckets 59 spaced equidis:

tantly. Each bucket is composed. of a front 60 and bottom 61. The bucket fronts 60 lie in a plane at right an Ice 'to the axis of rotation ofthe wheel, w ile the bottoms are curved and extend radially inwardly from I the rim to a pointshort of the centre or axis, thus forming scoops which scoop up the soil gathered by the spiral screws 41 and as the bucket wheel rot' tes and the individual buckets approach the highest point thereof the contents gravitate 'to the centre of the wheel, where the conveyor screw,"47 functions to imfelthe soil up the tube 39 to the top thereo The conveyor screw may ex;- tend slightly into the" bucket wheel.

Adverting to the inclined conveyor, the

: tube 39 thereof has its top end closed and joined to an integral downwardly turned elbow 62 that is swivelled'at 63in order that. the lower part may swing in a horizental plane. This lower art, is rigidly affixed to the horizontal disc arge conveyor tube 64 whereby the contents fed tor the top of the inclined conveyor pass into the elbow 62 and from there into this discharge conveyor tube 64. The contents are wormed along this tube by the screw 65. Power is taken ofl' theinclined conveyor. screw 47 for this purpose by means of a shaft 66 geared at its frontal males at 67 to thedischarge conveyor screw v and connected at its rear end bybevel gears 68 to the shaft-48.- The intermediate gear 65- hasa vertical spindle 7 O journalle'd in the elbow 62. A tie rod 71 supports the overhanging end of the tube 64.

71 is a discharge spout and 72 isEan-inte'rmediate discharge spout controlled by a conventional gate 73. The latter is'used only when it is desired to discharge excavated soil in a shorterradius.

The discharge conveyor is manually swingable sidewise by means of a hand crank 7 a connected to a drum 75 over which a cable 76 is wound. The cable passes over guide pulleys 7-7 to a sheave 78 that is rigidly aflixed to the bottom of the tube 64 coaxially with the swivel 62.

' In the use of this invention, the device' is'hauled from place to place with its rear end raised oil the ground. In operation the rear end is lowered by turning the hand wheel 36 which brings the spiral screws 41 and bucket wheel 55 into working contact with the ground. As the device is" drawn over the ground these spiral screws worm the soil to the bucket wheel 55, the buckets of which .zteed it' to the inclinedconveyor screw 47. The elevated soil is-precipitated through the elbow 32 into the discharge conveyor and therein wormed to thespouts 71- and 72 for discharge into a truck or the like. 4

. What I claim'is:-

1. In an excavator and loader, driven spiral screws horizontally disposed for excavating soil, a rotatable bucket wheel coopera ting therewith for receiving the soil, and an inclined conveyor or the 'incased. screw type having its receiving end associated with said bucket wheel. 2. In an 4 excavator and leader, power driven spiral screws horizontally disposed for excavatin soil, said screws being convergingly pos tioned and ada ted to -;worm the soil to their converging en s, a. rotatable bucket wheel positioned t erect, andan inclined conveyor having its receiving end associated with the bucketwheelisf' 3. In an excavator and louder, dflven "spiral screws horizontally dis ose dfor excavating soil, a rotatable buc et wheel cooperating therewith for receiving the soil,

spiral screws horizontally disposed for excavating soil, a rotatable bucket wheel co-' having its receiving end cooperating with the bucket wheel to elevate soil therefrom,

operating therewith for receiving the soil, said inclined conveyor extending forwardly an inclmed conveyor of the incased-screw over the spiral scre'ws,.a running gear sittype having its receiving end associated uated beneath and connected to the inclined with the bucket wheel, and a'- swivelly conconveyor, said running gear having its tracnected discharge conveyor operably assocition wheels positioned in advance of the ated with the egress of the inclined 'conspiral screws, gearing for taking off power veyor. I from said running gear in order to operate In an excavator and loader, driven the aforesaid working parts, a forecarriage spiral screws horlzontally disposed for exconnected to' the running gear, and means cavating soil, a rotatable bucket wheel coborne by the forecarriage for raising and operating therewith for receiving the soil, lowering the aforesaid structure on the runan inclined conveyor of the incased-screw ning gear.

type having its receiving end associated 10. In an excavator and loader, driven w1th the buck et wheel, a running gear supspiral screws horizontally disposed for po g he a esaid elem ts, a d m ans rearwardly excavating soil, a rotatable buckcarried thereby for operating the said eleet wheel situated rearwardly thereof for remen s.

6. In an excavator and lloader, driven having its receiving end cooperating with spiral screws horizontally disposed for exthe-bucket wheel to elevate soil therefrom, avatmg $011, a rotatable bucket wheel 00- said inclined conveyor extending forwardly operatlng therewith for receiving the soil, v over the spiral screws,-a running gear situan mchned conveyor of the incased screw ated beneath and connected to the inclined type having its recelving end assoclated conveyor, said running-gear having its tracwith the bucket wheel, a running'gear suption wheels positioned in advance of the porting the aforesaid elements, and means spiral screws, gearing for taking off power for taklng off power from the traction from said running gear in order to operate wheels thereof for operating said elements. the aforesaid workin parts, a forecarriage 7. In an excavator and loader, driven connected tothe-running gear, and manually spiral screws horizontally disposed for exoperable mechanism borne by the forecarcavat-ing soil, a rotatable bucket wheel coriage for raising and lowering the aforesaid operating therewith for receiving the soil, structure on the running gear.

an mchned conveyorof the incased-screw 11. In an excavator and loader, driven type having its receiving end associated spiral screws horizontally disposed for rearwith the bucket wheel, a rame suppor ting wardly excavating soil, a rotatable bucket the aforesaid elements, a running gear" of wheel situated rearwardly thereof for .re-

whichsaid frame is a part, and gearmg for ceiving soil therefrom, an inclined conveyor taking off power from'said running gear in having its receiving end cooperating with order to operate the aforesaid working 'thebucket wheel to elevate soil therefrom, parts. said inclined conveyor extending forwardly 8. In an excavator and loader, driven\ over the spiral screws, a running gear situspiral screws horizontally disposed for rearated beneath and connected to the inclined ceiving soil therefrom,an inclined conveyorwardly excavating soil, a rotatable bucket conveyor,'said running gear having its trac- Wheel situated rearwardly thereof .for retion wheels positioned in advance of the ceiving soil therefrom,'an inclined conveyor spiral screws, gearing for taking off power having its receiving end cooperating with from said runnin gear in order to operate the bucket wheel to'elevate soil therefrom, the aforesaid wor ing parts, a forecarriage said inclined con'veyor extending forwardly conn d to h r nning gear, and a handover the spiral screws, a running gear situwheel and screw, .mechamsm' bOrIle by the ated beneath nd connected t th i .forecarriage'for tilting the aforesaid strucclined conveyor, said running gear havin its traction wheels positioned in advance 0 the spiral screws, gearing for taking. off

ture about the axle of the running-gear traction wheels. I v

v12. In an excavator and loader, driven power from said runnin gear-in order to Spiral screws horizontally disposed for rearoperate the aforesaid wor ing arts, a forewardly excavat1ng-soil,ia rotatable bucket v carriage connected to the running gear, and wheel situated rearwardly thereof for remeans borne by the forecarriage-for tilting ceiving soil therefrom, an inclined conveyor the aforesaid structure on the running gear having its receiving end cooperating with inorder to raise it clear of the ground. the bucket wheel to elevate soil therefrom,

9. In an excavator and loader, driven said inclined conveyor extending forwardly spiral screws horizontally disposed for rearover the spiral screws, a running gear situwardlyexcavating soil, a rotatable bucket ated beneath and connected to the inclined wheel igsituated rearwardly thereof for reconveyor, said running gear having its tracceiving soil therefrom, an inclined conveyor tion wheels positioned in advance of the the aforesaid wor screw, a bracket loosely mounted upon the spiral screws, gearing for taking of power from said runningngear in order to operate wheel having threaded engagement .with the screw and flanking the hand Wheel, and members rigidly connecting the bracket to .the said running gear.

13. An excavator and loader comprising an axle housing, an axle journalled therein, traction wheels fitted on the axle, a driv ng connection between the axle and one of the an enlargement extending from one to theother of the housings and constituting a wheels, a housingextending parallel to the aforesaid housing, a shaft rotatable therein,

"ng parts, a forecarriage connected to the runnmg gear, a screw rising therefrom and held against rotation, a hand a scoop-shaped structure for scooping spiral screws, an inclined conveyor of' the screw incased type supported by the frame and housings, a bucket wheel mounted on i the bottom end of the inclined conveyor screw and to the rear of the spiral screws, andmechanism for. taking off power from the live axle to operate the inclined conveyor screw and bucket wheel.

14. In an excavator and loader, the c0ni bination with spiral screws for rearwardly worm ng soil and an inclined'conveyor for elevating the 'excavated' soil, of a bucket wheel operabl mounted upon the lower end of the conveyor screw and comprising 3m angle rim, an integral back, buckets extending inwardly from the rim and terminatin short of the centre, each bucket being 0 soil and dropping it radially inwardly as it approaches a top position in each revolution of the wheel.

Signed at Mitchell, Ontario, the 12th day a of June, 1928. i

- ROY BURGHILL 

